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(No Model.) 2 Sheets-Sheet 1.

G. R. GANNEPAX.

MIDDLINGS PURIFIER. No. 280,571. Patented JuIy'S, 1883.

I 1.7V VEJV TOR 2 SheetS -Sheet 2.

.Patented Jul y s, 1883.

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(No Model.)

G. R. GANNEFAX. MIDDLINGsPURIFIBR- NO. 280,571

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UNITED STATES PATENT OFFICE.

cnonen R. OANNEFAX," or DIXON, MISSOURI.

MIDDLlNGS-PURIFIER.

SPECIFICATION forming part of Letters Patent No. 280,571, dated July 3,1883.

Application filed March 3, 1883. (No model.)

To all whom it'nmy concern Be it known that I, GEORGE B. OANNEFAX, acitizen of the United States, and a resident at Dixon, in the county ofPulaski and State of Missouri, have invented certain new and usefulImprovements in Middlingslu'rifiers;v and I do declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same, reference being had to the accompanying drawings, and toletters or figures of reference marked thereon, which form a part ofthis specification.

Figure 1 of the drawings is a vertical sectional view of my machine, andFigs. 2 and 3 are cross-sectional views of the same.

This invention has relation to middlingspurifiers; and it consists inthe construction and novel arrangement of the parts, as will behereinafter fully described, and particularly pointed out in the claimsappended.

I11 the accompanying drawings, the letter A. designates thebolt-case,having the open ings B made through the inclined lower walls, 0, of thecase at its tail end.

D D represent slats arranged in series one above another, each, however,being set back somewhat at'its front or inner edge from the slat belowit, so that the series of slats is inclined to correspond with the slopeof the lower wall, 0, of the bolt-case. The slats are provided with endjournals, 6, which are seated in bearings in a frame. Each series ofslats is provided with an ope'ratingrod, g, whereby all the slats of theseries can be turned at the same time.

H indicates a flaring pipe or draft-chainber, the wide mouth of which isattached to .the wall 0 of. the bolt-case, so that it registers 1 k,thereof, with which the draft-pipe L communicates. The series of slats Dis arranged in the mouth of the draft-chamber, the inner edges of theslats projecting inward sufficiently to deliver the middlings fallingfrom the bolt ing-reel M thereon to the conveyer N below.

P represents a suction-fan, which operates, in connection with the pipeL, to draw the red dog and dust from the bolt-case through the openingsbetween the slats D, and to discharge the same through a pipe, B, into adust-room or other place of deposit. At a convenient through the pipe Lto fall into a box or re ceptacle, V, which is attached to the bottom ofthe pipe under the check-fan T. This receiver is provided with a slide,10, in its discharge-opening z, and the middlings in the receiver canfrom time to time be taken therefrom and returned to the bolt.

The draft through the pipe L can be regulated by means of a valve, J, orslide, arranged in connection with an opening, I, which is preferablymade at some point in the pipe between the draft-chamber H and thecheck-fan T. As the middlings sift down from the reel on the slats D thedraft draws the dust and fine bran out of the middlings, leaving themclear and white. Besides purifying the middlings, the attachmentventilates the bolt, taking out the heated air and preventing thebolting-cloth from sweating.

By manipulating the rod 9 the slats can be turned to provide smaller orlarger interspaces, so that the draft can be regulated at the mouth ofthe draft-chamber or opening through the wall of the bolt-case.

Having described this invention, what I claim, and desire to secure byLetters Patent, 1s

1. The combination, with the bolt-case A, having the inwardly-slopinglower walls, 0, provided with the openings B, of the inclined series ofpivoted slats D and their operatingrods 9, located at the tail end ofthe bolt-case, the flaring draftchamber H, the mouths of which registerwith the openings B, the pipe L, SllOtl0l1-fEtll P, and pipe R,substantially as specified.

2. In a purifying attachment for flour-bolts, the combination, with thedraft-chamber and its series of adjustable slats, of the draft-pipe,

suction-fan,check-fan and receiver under said check-fan, and theregulating-valve, substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

GEORG ll RAllFORl) CANNEFAX.

IVVitnesses:

T. A. MURPHY, J. F. RHEA.

